Update README with LeetCode Daily Challenge

Author: jeremymanning

Diff for: README.md

@@ -277,6 +277,7 @@ _**Note:** Our group is currently taking a break from grinding leetcode. The tab
 | March 21, 2025 | [2115](https://leetcode.com/problems/find-all-possible-recipes-from-given-supplies/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/2115) | 🟡 Medium |
 | March 22, 2025 | [2685](https://leetcode.com/problems/count-the-number-of-complete-components/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/2685) | 🟡 Medium |
 | March 23, 2025 | [1976](https://leetcode.com/problems/number-of-ways-to-arrive-at-destination/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/1976) | 🟡 Medium |
+| March 24, 2025 | [3169](https://leetcode.com/problems/count-days-without-meetings/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/3169) | 🟡 Medium |
 
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